LED with current confinement structure and surface roughening
First Claim
1. A light emitting diode (LED) comprising:
- a p-type layer of material having an associated p-contact;
an n-type layer of material having an associated n-contact;
an active region between the p-type layer and the n-type layer;
a confinement structure formed within at least one of the p-type layer of material and the n-type layer of material, the confinement structure substantially preventing the emission of light from the area of the active region coincident with the area of the confinement structure; and
a roughened surface associated with one of the p-type layer of material and the n-type layer of material.
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Accused Products
Abstract
An LED having a p-type layer of material with an associated p-contact, an n-type layer of material with an associated n-contact and an active region between the p-type layer and the n-type layer, includes a confinement structure that is formed within one of the p-type layer of material and the n-type layer of material. The confinement structure is generally aligned with the contact on the top and primary emission surface of the LED and substantially prevents the emission of light from the area of the active region that is coincident with the area of the confinement structure and the top-surface contact. The LED may include a roughened emitting-side surface to further enhance light extraction.
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Citations
35 Claims
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1. A light emitting diode (LED) comprising:
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a p-type layer of material having an associated p-contact;
an n-type layer of material having an associated n-contact;
an active region between the p-type layer and the n-type layer;
a confinement structure formed within at least one of the p-type layer of material and the n-type layer of material, the confinement structure substantially preventing the emission of light from the area of the active region coincident with the area of the confinement structure; and
a roughened surface associated with one of the p-type layer of material and the n-type layer of material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light emitting diode (LED) comprising:
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a first layer of material having an associated first contact and a first surface through which light is emitted;
a second layer of material having an associated second contact;
an active region between the first layer and the second layer; and
a confinement structure integral with one of the first layer and the second layer and generally axially aligned with the first contact, the confinement structure substantially preventing the emission of light in the area of the active region coincident with the area of the confinement structure. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A light emitting diode (LED) comprising:
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a first layer of material having an associated first contact and a first surface through which light is emitted;
a second layer of material;
an active region between the first layer and the second layer;
a conducting substrate adjacent the second layer of material and having an associated substrate contact; and
at least one confinement structure within one of the first layer, the second layer and the substrate and generally axially aligned with the first contact, the at least one confinement structure directing current flowing toward the active region away from the area of the active region that is coincident with the area of the confinement structure. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A light emitting diode (LED) comprising:
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a first layer of material having an associated first contact and first surface through which light is emitted;
a second layer of material having an associated second contact;
an active region between the first layer and the second layer; and
a confinement structure associated with the second contact, the confinement structure directing current flowing toward the active region away from the area of the active region that is coincident with the area of the confinement structure. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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Specification